| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric motor control device for preventing an electric motor or a variable speed drive control device from being damaged or tripped by overheating. SOLUTION: An electric motor control device is provided with an electric motor temperature detector 5 for detecting the body temperature of an electric motor 1, an electric motor temperature detection circuit 6 for transmitting an electric motor body temperature signal, an electric motor ambient temperature detector 8 for detecting the ambient temperature of the electric motor 1, an electric motor ambient temperature detection circuit 9 for inputting the electric motor ambient temperature from the electric motor ambient temperature detector 8 and transmitting an electric motor ambient temperature signal, and a cold start judgment circuit 14 for judging the work or operation status of the electric motor 1 and transmitting a cold start judgment signal. |
